Shear device



Jan. 1, 1935.

. F. WINTERKAMP SHEAR DEVICE 4 Sheets-Sheet 1 Filed Feb. 10, 1934 FEEDER/CK l V/NTE KQM/Z Zy: if! 4/70/7736.

5' F. WINTWERKAMP 1,986,599

SHEAR DEVI CE Filed Feb. 10, 1934 4 Sheets-Sheet 2 Q w% M lfiwenfar: FEEDER/CK W/NTEEKfi/WP,

Jan. 1, 1935.

F. WINTERKAMP.

SHEAR DEVICE Filed Feb. 10, 1934 4 Sheets-Sheet 3 F. WINTERKAMP SHEAR DEVICE w NM J1, 1| /l.\\ 4 9 K i q C E mm R Q b M hm @M km F5 MN N\ ,9 M

Jan. 1, 1935.

Patented Jan. 1935 e t This invention relates to" a shear device, and more particularly to onewhich is well adapted to the chopping"or-cropping of 's'trip and hoop material before entering, a coiling machine, 9,1: though not limited thereto.

One object of the present invention is the,

provision of a novel shear de'viceemplo'ying levers whichwill disappear when not in use, and thus prevent damage accruingto the materialfwhich often results in the use of conventionalstationary shear knives duet'o the'presences'of the shear levers'after'the cut is made.

, Another objectis to provideia novel device'of the classdescribed which is simple i'ndesign, and one, which: will notrequire'adjustment erreplacement whileinservice. 1

These and further objects will be apparent after referring to the drawings, inwhichz' a v III-III of Figure 1;" T i *Figures'4;5,- 6,'Iand,8,;are schematic elevations tact with the guide blocks 8,;3I1d supporta shaft. 1 .10 which is capable of relative rotary movement.

Figure 1 is a side elevation of the deviceof the invention. i i a l q A i Figure 2 is a sectional view. on the line II-II of Figure l j a 1 Figure 3 isa sectional elevation on the line of the devicepof the invention in its severalstages of operation. 1 x W x Referring more particularly to the drawings, thenumeral2 designates a bedup'on which rests a pair ofhousing side plates 3, each ofxwhich has a vertical aperture-4;: The side plates 3-of the housing are provided 1 on. their upper edges with. a top plate 5 across which the material to be sheared is adapted to be moved, The top plate 5 has an aperture'fi throu'ghipwhich the cutting elements of theinvention;areadaptedtoappear,

effect the cut, and disappearioutof view.

Each of theaapertures' l in ,the side plates 3 is provided with a pair of guide blocks 8, formed of a suitable hard material: Aroller 9 is adapted tomove in each of the apertures 4 while in con A shear lever 12 is provided intermediate 'its center and upper end withqa journal 13 ,which is adapted to rotate on a bushing 13 which is disposed on the shaft 10. The upper end ,of'the shear lever 12, which is indicated at;,15,:is pro? vided with a knife bladelfi. Alink 1'1 ispivoted, as at 18, to the lower endwof, the shearlever12. A lug 19 is suitablyJsupported between thepside plates 3 and pivotally holds the other end of the A shear lever 22, which issimilarto the shear lever 12, is providedintermediateits center and upper end with a journal 23, which is adapted for rotary movement on a bushing 23?, the latter be ingdisposed ontheshaft ,10 similar to the bushing 13%. The upper end of the'shear lever 22, which is indicated at 25, is provided with a knife blade v26'for cooperation with theknife blade 16 on the shear lever 12 to effectthe cutting of the,

material in a manner to be later described.

The shear lever 22 is apertured adjacent its lower end to enable it to earrya shaft 28 which is adapted to extend from either side thereof and support on each of its ends a bushing 27 on which there is mounted a roller 29, A pair of links 14 are connected on onejof their ends to the vertically mov'able' shaft and on the otherof their ends to the shaft 28 at positions immediatelyadjacent the rollers 29. Each of the rollers 29 is adapted to travel on a trackway 30-on each of the side plates 3 of thhousing; The trackways 30 are both provided with a curved or arced surface 31. The curved orarced surfaces 31 of the trackways 30 terminate at 32, from whence they extend in a horizontal plane, as shown at 33;

A pair of journals 35 are connected to the bed 2 and rotatably support a shaft 36 having intermediate its ends a crank 37. A pitman38 is connected to the crank 37 on one of its ends and to the, lowermost extremity of the shear lever 22 on its other end, as shown at 39 A gear 41 is secured to one end ofthe shaft 36. 1

A pair of journals 43 are suitablysecured to the side plates 3immediately above thejournals 35, which are secured to the bed 2, and support a shaft 44 which carries on one of its ends a pinion 45 which is in constant engagement with the gear 41. The shaft 44 carries on its other end a large gear 46. A motor 47 is mounted between i the side plates 3 of the housing, and is provided with the usual motor pinion 48, which engages the large gear 46, f i

Referring to Figure 4 rollers 29 on the shaft 28, which is carried by of the drawings, the

the lower end of the shear lever, 22,"are shown in retracted position adjacent the extremities of the horizontal surfaces 33 of the trackways 30.

In thisposition, the shaft 10 will havebeen crank 37, rotating in a clockwise direction, will withdraw the pitman 38 from the 7 position of Figure 4.1 The withdrawal of the pitman will move the rollers 29 from the horizontal surfaces 33 ,of the trackways 30 to a position adjacent the upper extremities 32 of the arced or curved sur: faces 31 as shown in Figure 5, In this position,

the shaft 28,!operating through the shear lever 22,-and thelinks 14, will have raised the shaft-1Q such manner as to move the upper ends 15 and 25 of the shear levers 12 and 22, respectively,

through the aperture 6'in the top plate of the housing.

As the crank 37 moves further in its clockwise direction of rotation to the position shown in Figure 6, the rollers 29 will cross the points 32 on the trackways 30 and move down the 'arced or curved surfaces 31, and cause the upper end 25 of the shear lever 22 to move horizontally toward the upper end l5 of the shear lever 12, bringing their knife blades 26 and lfi, respectively, into cutting engagement.

As the cutting engagement of the knife blades 26 and 16 is made, the crank 37 will be in deadcenter position, from whence it will move in its clockwise direction of rotation, and cause the andonto the horizontal surfaces33 of the trackway'30. The movement of therollers over the horizontal surfaces 33, as shown inFigure 8, will cause the various elements to be restored to. the disappearing position of Figure 4, thereby cornpleting a cycle of operation.

, While I have shown and describedone specific embodiment of my invention, it will be understood that I do not wish to be limited exactly thereto, since various modifications may be made without departing from the scope of my invention, as defined in the following claims.

I claim:

1-. In a shear device, a horizontal shaft adapted for vertical movement, a shear lever carried intermediate its ends by said shaft and adapted for vertical movement therewith, and a second shear lever j ournaled intermediate its ends on said shaft and adapted for both vertical and rotary movementr 2. In a-shear device, a housing, a shaft slidably mounted in said housing for vertical movement with respect thereto, a shear lever journaled intermediate its ends-on said shaft, a link connectedto said housing and to the lower end of said shear lever, a second shear lever journaled intermediate its ends on said shaft, a shear blade mounted on the upper end of each of said shear levers, and means'for moving said second named shear lever vertically in such manner as to cause it to partially rotate on said shaft.

3. In a shear device, a housing, a shaftslidably mounted in said housing for vertical movement with respect thereto, a shear lever journaled intermediate its ends on said shaft, a link connected to said housing and, to the lower end of said shear lever, a second shear lever journaled intermediate its ends on said shaft, a shear blade mounted on the upper end of each of said shear levers, a trackway carried by said housing, a roller carried by the lower end 'of said second named lever and adapted for movement insaid trackway, and means for moving said roller.

4. In a shear device, a housing having a ver tical aperture in each of its sides, a roller adapted for movement in each of said apertures, a shaft journaled in said roller, a pair of shear levers journaled intermediate their ends onsaid' shaft,

means for limiting the rotation of one of said shear levers on said shaftfa curved trackway in lmovement in each of said apertures, a shaft journaled in said rollers, a pair of shear levers journaled intermediate their ends on said shaft,

, means for limiting the rotation of one of said shear levers on said shaft, a curved trackway in each of the sides of said housing, a shaft carried bythe lower end of the other of said shear levers, a roller mounted on each endof said shaft for movement in one of said trackways, at least one link connected to both of said shafts, acrankshaft journaled on said housing, .a connecting-rod carried by said crankshaft and connected-to the shear lever carrying thev shaft on which said rollersare mounted, and means for rotating said crankshaft.

6. In a shear device, a housing having a vertical aperture in each of its sides, a. roller adapted for movement in each of said apertures, a shaft journaled in said rollers, a pair of shear levers journaled intermediate their ends on said shaft, means for limiting the rotation of one of said shear levers on said shaft, a curved trackway in eachof the sides of said housing, a shaft carried by the lower endof the other of said shear levers, a roller mounted on each end of said shaft for movement in one of said trackways, a crankshaft journaled on said housing, a connecting-rodcarried by said crankshaft and connected to the shear lever carrying the shaft'on which said rollers are mounted, and means for rotating said crankshaft, said. means comprisingamotor and a transmission mechanism.

'7. In a shear device, a housing having avertical aperture in each of its sidesfa pair of guides in each of said apertures, a roller disposed between each pair of saidguides, a shaft journaled in said rollers, a shear'lever carried intermediate its ends by said shaft and adapted for vertical movement therewith, and a second shear lever journaled intermediate its ends on said shaft and adapted for both vertical and rotary movement.

8. In a shear device, a housing having a vertical aperture in'each of its sides, a'pair of guides in each of said apertures, a roller disposed between each pair of said guides, ashaft journaled in said rollers, a shear lever carried intermediate its ends by said shaft and adapted for vertical movement therewith, a second shear 'lever journaled intermediate its ends on said shaft and adapted for both vertical and rotary movement, said hdusing having an aperture'through which said shear levers are adapted to extend in their vertical movement, and a shear blade mounted on the upper end of each of said shear levers.

9. A- device for shearing strip material comprising a plate across which said material is adapted to be moved, a pair of pivotally connected shear operating levers, a knife-blade on the upper end of each' of said shear operating levers, means for operating said levers above said plate, and means for withdrawing said levers below said plate; I I

- FREDERICK WINTERKAMP. 

